Rupert seems to have had a sudden spurt of growth almost overnight. He's so chesty now, I've had to let out his harness and collar. So macho and such a far cry from the thin puppy with the spindle legs when he first arrived. Now, he's more like a little horse. Trots around like one, too.
HRH does not care that he is now much more bigger than she is. She still humps him. As every good monarch must.